diff --git a/compound-library.md b/compound-library.md
index 91bd16e..06c83de 100644
--- a/compound-library.md
+++ b/compound-library.md
@@ -26,7 +26,7 @@ This function returns a new string which is identical to the string `self`, exce
 
 This function returns a string representation of `self`. This is intended for arrays and dictionaries, but can theoretically work on any printable value.
 
-If the resulting string is longer than `TOY_MAX_STRING_SIZE` - 1, then it is truncated.
+If the resulting string is longer than `TOY_MAX_STRING_LENGTH` - 1, then it is truncated.
 
 ## _toUpper(self: string)